This board converts a USB connection into 5 volt TX and RX that you can connect straight to the Arduino Mini or other microcontrollers, allowing them to talk to the computer. It is based on the FT232RL
chip from FTDI (drivers
are included with the Arduino software).
You can find here
your board warranty informations.
You can find in the Getting Started section
all the information you need to configure your
board, use the Arduino So ftware (IDE), and start
tinker with coding and electronics.